Haemoglobin is a type of 

(a) carbohydrate

(b) vitamin

(c) skin pigment

(d) respiratory pigment

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1 Answers

Correct Option (d) respiratory pigment

Explanation:

 Haemoglobin (Hb) is a proteinaceous respiratory pigment made up of a protein called globin with iron [Fe2+]  containing porphyrin as prosthetic group. It binds to oxygen reversibly.

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